PHILADELPHIA - Researchers from the University of Pennsylvania School of Medicine and colleagues discovered that the Notch signaling pathway, which determines the development of many cell types, and is also implicated in some cancers, is not universally essential for the maintenance of stem cells. The findings appear this week in Cell Stem Cell, and indicate that inhibitors of Notch may not affect bone marrow stem cells.
Ames, Iowa Byron Brehm-Stecher, assistant professor in food science and human nutrition, has some big ideas for his work with tiny particles. His latest research project will allow him to study the potential of using silver nanoparticles to improve the safety of the worlds food supply.
Although the particles cant be added directly to foods, the ultimate goal of this project is to develop food-related applications such as microbe-resistant fabrics or non-biofouling surfaces. The research, he said, could have a large impact on the safety of foods.
A closer alliance between computational and experimental researchers is needed to make progress towards one of biologys most challenging goals, understanding how epigenetic marks contribute to regulation of gene expression. This emerged from a recent workshop organised by the European Science Foundation (ESF), Computational Approaches to the Role of Epigenetic Marks in Transcription Regulation.
LEXINGTON, Ky. (April 3, 2008) − Two University of Kentucky researchers from the department of communication in the UK College of Communications and Information Studies have learned that targeted mass media campaigns alone can be effective in convincing high sensation-seeking, impulsive decision-making young adults to adopt safer sex practices.
There may be constituents in wine that protect against dementia. This is shown in research from the Sahlgrenska Academy at University of Gothenburg in Sweden.
Although millions of people use Web search
engines, researchers show that by using
relatively simple methods most queries
submitted can be classified into one of three categories.
Jim Jansen, assistant professor in Penn State's College of Information Sciences and Technology, worked with IST undergraduate Danielle Booth and Amanda Spink, Queensland University of Technology, to find that Web search engine users are doing primarily informational, navigational or transactional searching.
Cornell researchers have identified a mating mechanism that possibly
could be adapted to prevent female mosquitoes from spreading the
viruses that cause dengue fever, second only to malaria as the most
virulent mosquito-borne disease in the tropical world.
Specifically, they have discovered 63 proteins that male mosquitoes
transfer to Aedes aegypti females during mating and are thought
briefly to change the females' physiology and behavior, in particular
suppressing the female's appetite for mammalian blood.
CAMBRIDGE, Mass.--Knowing how powerful a hurricane is, before it hits land, can help to save lives or to avoid the enormous costs of an unnecessary evacuation. Some MIT researchers think there may be a better, cheaper way of getting that crucial information.
So far, there's only one surefire way of measuring the strength of a hurricane: Sending airplanes to fly right through the most intense winds and into the eye of the storm, carrying out wind-speed measurements as they go.